
A sampot is very similar to a sarong and a dhoti. This traditional, national garment of Cambodian, is worn draped around the bottom half of the body.
"The sampot dates back to the Funan era when a Cambodian king ordered the people of his kingdom to wear the sampot at the request of Chinese envoys."
http://en.wikipedia.org/wiki/Sampot
This garment is worn by all classes and even preferred over Western clothing because of the ease of dress and comfort.